Date: Thu, 29 Mar 2012 17:48:39 -0400 From: Ryan Stone <rysto32@gmail.com> To: freebsd-net <freebsd-net@freebsd.org> Subject: Removing an IPv6 address does not remove NDP entries on that subnet Message-ID: <CAFMmRNyK6RXb43kCRxZbZPSWmmGHYx-1cxsTgL1orVjoDcKYAg@mail.gmail.com>
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Currently, if you remove an IPv4 address from an interface, all ARP cache entries on its subnet are invalidated. However, the same thing is not done for NDP cache entries when an IPv6 address is removed*. Is this correct behaviour? It seems weird to have IPv4 and IPv6 behave differently. * In a way this is a good thing as in6_lltable_prefix_free() is guaranteed to crash your kernel in two different ways, and that's not counting the race conditions that it's subject to. I plan on addressing these problems along with kern/165863, but in working on that I realized that it was impossible to test any changes.
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